支气管哮喘是当今世界上最常见的一种气道慢性炎症性疾病。这种炎症可导致反复发作的咳嗽、喘息、胸闷和呼吸困难[1]。经调查 ,我国儿童哮喘患病率约为0.5%～2% ,个别地区高达5 % ,全国至少有千万以上的患儿[2]。昆明地区尚无有关儿童哮喘完整的流行病学资料。我们对昆明市0～1 Bronchial asthma is one of the most common chronic inflammatory diseases of the airways in the world today. This inflammation can lead to recurrent cough, wheezing, chest tightness and difficulty breathing [1]. After investigation, the prevalence of childhood asthma in children is about 0.5% ~ 2% in some areas up to 5%, at least 10 million children in the country [2]. There is no complete epidemiological data on childhood asthma in Kunming. We are 0 ~ 1 in Kunming